Buell XB 2010, Service Manual

Page: 381 / 714

4.8 ENGINE TEMPERATURE SENSOR (ET)
GENERAL
The Engine Temperature Sensor (ET Sensor), located in the
rear cylinder head, monitors the engine temperature close to
the combustion chamber. In addition to aiding the ECM in
monitoring the operation of the engine, it is also used to warn
the operator of potentially damaging temperatures by causing
the CHECK ENGINE lamp to blink during operation.
REMOVAL
TOOL NAME PART NUMBER
ENGINE TEMPERATURE SENSOR
SOCKET SNAP-ON M3503B
1. Remove seat.
To prevent accidental vehicle start-up, which could cause
death or serious injury, disconnect negative (-) battery
cable before proceeding. (00048a)
2. Disconnect negative battery cable.
3. Remove intake cover assembly. See 2.38 INTAKE
COVER .
4. Remove air cleaner cover. See 4.3 AIR CLEANER
ASSEMBLY .
5. Remove right upper tie bar fastener. Rotate tie bar to
provide access to sensor.
NOTES
• Lightning/Ulysses models: Remove fastener securing rear
wire guide to underside of frame to provide access to
temperature sensor.
• Do not pull on engine temperature sensor wiring. Excess
strain to sensor wiring will cause sensor damage.
6. See Figure 4-19 . Disconnect engine temperature sensor
connector [90] above rear cylinder head.
NOTE
See Figure 4-20 . All Buell engines come equipped with a piece
of conduit approximately 3.94 in. (100mm) long to protect the
engine temperature sensor lead from chafing on the inside of
the rocker box. The conduit will be able to slide as much as 5
inches in order to move it out of the way to use the special
socket to remove and install the sensor.
7. Slide rubber boot up ET sensor wire.
8. Remove sensor from rear cylinder head using ENGINE
TEMPERATURE SENSOR SOCKET (Part No. SNAP-ON
M3503B).
sm00232
Figure 4-18. Location of Engine Temperature Sensor in
Rear Cylinder Head
sm00861
Figure 4-19. Engine Temperature Sensor Connector [90]
(Typical)
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2010 XB Service: Fuel System 4-15